SAP HANA and ESS: A Winning Combination

SAP HANA and ESS: A Winning Combination

by Olaf Weiser
Released August 2018
Publisher(s): IBM Redbooks
ISBN: 9780738456973

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Book description

SAP HANA on IBM® POWER® is an established HANA solution with which customers can run HANA-based analytic and business applications on a flexible IBM Power based infrastructure. IT assets, such as servers, storage, and skills and operation procedures, can easily be used and reused instead of enforcing more investment into dedicated SAP HANA only appliances.

In this scenario, IBM Spectrum™ Scale as the underlying block storage and files system adds further benefits to this solution stack to take advantage of scale effects, higher availability, simplification, and performance.

With the IBM Elastic Storage™ Server (ESS) based on IBM Spectrum Scale™, RAID capabilities are added to the file system. By using the intelligent internal logic of the IBM Spectrum Scale RAID code, reasonable performance and significant disk failure recovery improvements are achieved.

This IBM Redpaper™ publication focuses on the benefits and advantages of implementing a HANA solution on top of IBM Spectrum Scale storage file system.

This paper is intended to help experienced administrators and IT specialists to plan and set up an IBM Spectrum Scale cluster and configure an ESS for SAP HANA workloads. It provides important tips and bestpreferred practices about how to manage IBM Spectrum Scale''s availability and performance.

If you are familiar with ESS, IBM Spectrum Scale, and IBM Spectrum Scale RAID, and you need only the pertinent documentation about how to configure a IBM Spectrum Scale cluster with an ESS for SAP HANA, see Chapter 5, "IBM Spectrum Scale customization for HANA" on page 25.

Before reading this IBM Redpaper publication, you should be familiar with the basic concepts of IBM Spectrum Scale and IBM Spectrum Scale RAID.

This IBM Redpaper publication can be helpful for architects and specialists who are planning an SAP HANA on POWER deployment with the IBM Spectrum Scale file system. For more information about planning considerations for Power, see the SAP HANA on Power Planning Guide.

Table of contents

  1. Front cover
  2. Notices
    1. Trademarks
  3. Preface
    1. Authors
    2. Now you can become a published author, too!
    3. Comments welcome
    4. Stay connected to IBM Redbooks
  4. Summary of changes
    1. August 2018, Second Edition
  5. Chapter 1. Introduction to SAP HANA and IBM Elastic Storage Server
    1. 1.1 Landscape overview
    2. 1.2 Introduction to ESS
    3. 1.3 Software components
  6. Chapter 2. Cluster networking
    1. 2.1 Cluster networking overview
    2. 2.2 Network topology summary
  7. Chapter 3. Understanding IBM Spectrum Scale RAID components
    1. 3.1 Recovery Group
    2. 3.2 RAID Code, VDisk, and declustered array
    3. 3.3 IBM Spectrum Scale RAID: Fast writes (NVR)
      1. 3.3.1 Fundamental considerations
    4. 3.4 IBM Spectrum Scale RAID: Hot spare and disk failures
      1. 3.4.1 Hot spares in IBM Spectrum Scale RAID
      2. 3.4.2 Disk failure
      3. 3.4.3 Second disk failure
      4. 3.4.4 Spare space
  8. Chapter 4. IBM Spectrum Scale adjustments
    1. 4.1 Overview
      1. 4.1.1 Server-side settings
      2. 4.1.2 Client-side settings
    2. 4.2 IBM Spectrum Scale parameters
      1. 4.2.1 DirectIO in IBM Spectrum Scale
      2. 4.2.2 ignorePrefetchLUNCount
    3. 4.3 Performance numbers
      1. 4.3.1 Single client performance
      2. 4.3.2 SAP HANA HWCCT test
  9. Chapter 5. IBM Spectrum Scale customization for HANA
    1. 5.1 Overview
    2. 5.2 File system and VDisk layout
      1. 5.2.1 Internal VDisks
      2. 5.2.2 Log file system
      3. 5.2.3 Data file system
      4. 5.2.4 Shared file system
      5. 5.2.5 Creating file sets
  10. Chapter 6. Summary
  11. Appendix A. Sample configuration for bonding on SUSE Linux Enterprise Server
  12. Appendix B. Loghome configuration of an ESS building block
  13. Appendix C. Calculating maximum capacity of a DA
  14. Appendix D. Example of file system setup and HANA installation
  15. Appendix E. Side aware configuration examples
  16. Related publications
    1. IBM Redbooks
    2. Other publications
    3. Online resources
    4. Help from IBM
  17. Back cover

Product information

  • Title: SAP HANA and ESS: A Winning Combination
  • Author(s): Olaf Weiser
  • Release date: August 2018
  • Publisher(s): IBM Redbooks
  • ISBN: 9780738456973